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100 amps of electricity crackle in a vacuum chamber, creating a
spark that transforms carbon vapor into tiny structures. Depending
on the conditions, these structures can be shaped like little,
60-atom soccer balls, or like rolled-up tubes of atoms, arranged
in a chicken-wire pattern, with rounded ends. These tiny, carbon
nanotubes, discovered by Sumio Iijima at NEC labs in 1991, have
amazing properties. They are 100 times stronger than steel, but
weigh only one-sixth as much. They are incredibly resilient
under physical stress; even when kinked to a 120-degree angle,
they will bounce back to their original form, undamaged. And
they can carry electrical current at levels that would vaporize
ordinary copper wires.
Learn more about carbon nanotubes from the many resources on this site, listed below. More information on Carbon nanotubes can be found here.
Carbon NanoTubes: Structure - Properties - Applications
19 Mar 2012 | Teaching Materials | Contributor(s): Yuri A Kruglyak
Presentation slides for seminar given for students of Faculty of Computer Sciences of Odessa State Environmental University, Ukraine by Prof. Yuri Kruglyak on May 22, 2008.
Carrier Statistics Lab: First-Time User Guide
09 Mar 2009 | Teaching Materials | Contributor(s): Abhijeet Paul, Gerhard Klimeck, Benjamin P Haley, Saumitra Raj Mehrotra
This first-time user guide is an introduction to the Carrier Statistics Lab . It provides basic definitions, guidance on how to run the tool, and suggested exercises to help users get accustomed...
Computational Nanoscience, Lecture 4: Geometry Optimization and Seeing What You're Doing
5.0 out of 5 stars
13 Feb 2008 | Teaching Materials | Contributor(s): Jeffrey C Grossman, Elif Ertekin
In this lecture, we discuss various methods for finding the ground state structure of a given system by minimizing its energy. Derivative and non-derivative methods are discussed, as well as the...
Computational Nanoscience, Lecture 5: A Day of In-Class Simulation: MD of Carbon Nanostructures
15 Feb 2008 | Teaching Materials | Contributor(s): Jeffrey C Grossman, Elif Ertekin
In this lecture we carry out simulations in-class, with guidance from the instructors. We use the LAMMPS tool (within the nanoHUB simulation toolkit for this course). Examples include...
Resonant Tunneling Diodes: an Exercise
4.0 out of 5 stars
06 Jan 2006 | Teaching Materials | Contributor(s): H.-S. Philip Wong
This homework assignment was created by H.-S. Philip Wong for EE 218 "Introduction to Nanoelectronics and Nanotechnology" (Stanford University). It includes a couple of simple "warm up" exercises...